:root{--ink:#25223b;--muted:#6b6580;--line:#e6e3f0;--brand:#5b3bd6}
*{box-sizing:border-box}body{margin:0;font-family:"Sarabun","Noto Sans Thai",system-ui,sans-serif;color:var(--ink);background:#f8f7fc;line-height:1.75}
header{background:linear-gradient(135deg,#110e24,#251b57 55%,#4a2f9e);color:#fff;padding:28px 20px 34px}
header .in,main{max-width:760px;margin:0 auto}header small{opacity:.7;letter-spacing:2px}header h1{margin:6px 0 4px;font-size:26px}header p{margin:0;opacity:.8;font-size:14px}
main{background:#fff;border-radius:22px;margin:-18px auto 30px;padding:22px 22px 30px;box-shadow:0 10px 30px rgba(37,34,59,.08)}
h2{font-size:18px;margin:26px 0 6px;color:#3b2a8f}h2:first-child{margin-top:4px}p,li{font-size:15px}ul,ol{padding-left:22px}
.box{background:#f4f2fc;border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin:12px 0}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{border-bottom:1px solid var(--line);padding:9px 6px;text-align:left;vertical-align:top}th{width:32%;color:var(--muted);font-weight:600}
nav{max-width:760px;margin:0 auto 30px;text-align:center;font-size:13px;color:var(--muted)}nav a{color:var(--brand);margin:0 8px;text-decoration:none}a{color:var(--brand)}